Bit-brace.



No. 788,895 PATENTED FEB. 28, 1905. J. M. RIBERT.

BIT BRAGE.

APPLICATION 1 11.31) OUT. 5. 1904.

% lIIII/Il W IIIIIII/IIII IIIIIIIIIIIIIIIIIII Ill/Ill I \\\\\\\\\\\\\\A 0 E n ueutoz Patented February 28, 1905.

SATES PATENT OFFICE.

JOSEPH M. RIBERT, OF NEW YORK, N. Y., ASSIGNOR TO NATIONAL NOVELTY CORPORATION, OF NEW YORK, N. Y,A OORPORA'IION OF NEi/V JERSEY.

BllT-BRAOEI.

SPECIFICATION forming part of Letters Patent No. 783,895, dated February 28, 1905. Application filed October 5, 1904. Serial No. 227,265.

To (0Z7 whom it lit/t7 cor 1.007%.-

lie it known that l, J os urn M. Runner. a citizen of the United States, residing at New York, in the county of New York, State of New York, have invented certain new and useful Improvements in Bit-Braces, of which the following is a description, reference being had to the accompanying d rawings and to the letters of referonce marked thereon.

My invention relates to bit-braces of the class particularly intended for use in boring or drilling in corners and other situations in which there is not sufficient room for rotation of the driving-crank in line with the bit or drill, necessitating operation of the crank at an oblique angle to the axis of the bit or drill; and my invention has for its object to provide a brace adapted for such uses which shall be simple and inexpensive in construction and eliicient and convenient in operation.

iteferrin g to the drawings, Figure 1 is a side elevation of a bit or drill brace embodying my invention. Fig. 2 is a detail plan View, on an enlarged scale, partly in section, of the universal-joint connection between the crankshaft and the chuck; and Fig. 3 is a detail sectional view of the rear end of the crankshaft frame.

in the drawings, A is the chuck for holding the bit or drill.

it is the crankshaft arranged at an oblique angle to the axis of the chuck.

O the universal joint connecting the crankshaft and chuck.

1) is a tube or pipe forming part of the frame and .in which the crank-shaft is supported.

it is a handle-frame forming part of the main frame and adjustably secured. on the tube or pipe D.

From the forward end of the tube or pipe 1) guiding-arms F. curved as shown, extend toward the chuck, having at their ends a bearing Or for the chuck and so arranged that sufficient space is afforded between them to permit the parts of the universal joint O to rotate freely. The guiding-arms F may be formed integrally with the tube or pipe D; but to avoid expense in construction 1 pre fer to make them separate from the tube or pipe I), utilizing for the latter a piece of straight tubing and securing the guiding-arms to the end of the tube or pipe by a screwthread formed on the interior of a collar H, formed integrally with the arms F.

The handle-frame E is provided with handles IE and E arranged at right angles to each other, either of which is adapted to be grasped by one hand of the operator while the other hand is used to rotate the crank.

At one end the handle-frame is provided with i a collar 1, adapted to lit the exterior of the collar H and to be held in position thereon by a set-screw 1. At its other end the handle frame is provided with a bearing-piece J. having a bearing formed thereon for the crankshaft adapted to lit within the outer end of the tube or pipe 1), the end of the arm fitting against the outer end of the tube or pipe, and thus holding it against outward movement. On the outer end of the crank-shaft against the outer face of the end of the handle-frame E is secured the crank K, in which the crankarm K is adj ustably secured by set-screw K".

The handle-frame E is preferably provided with a corner-piece L, adjustably held therein by set-screw L, adapted to be moved in or out, according to the distance of the axis of the bit or drill from the corner.

By means of the construction of the frame as above described the handle-frame may be shifted from the position in which it is shown in full lines in Fig. 1 to the position shown in dotted lines, the handle E" serving as the hold ing-handle in the one case and either of the handles E or E serving as the holding-handle in the other case and enabling the device to be used between floor beams or rafters or in other positions in which the use of the tie vice with the handle-framein the position shown in full lines in Fig. 1 would be prevented. The handle-frame may, if desired, be adjusted to any position intermediate the two positions in which it is shown, the set-screw l holding it firmly in whatever position it may be placed.

it will of course be understood that .I do not desire to be limited to the precise construction shown, as it is evident that this construction may be changed in details without departing from the spirit of the invention.

Having thus described my said invention, what I claim, and desire to secure by Letters Patent, is

1. A bit-brace comprising a crank-shaft having a crank on its outer end, a chuck, means for holding the chuck at an oblique angle to the crank-shaft, a flexible joint between the crank-shaft and chuck, and means for holding the crank-shaft in position comprising a tubular portion through which the crankshaft extends and a handle-frame mounted on the tubular portion between the crank and flexible joint and means for adjustably holding the handle-frame relative to the tubular portion.

2. A bit-brace comprising a crank-shaft havinga crank on its outer end, achuck, means for holding the chuck at an oblique angle to the crank-shaft, a flexible joint between the crank-shaft and chuck, and means for holding the crank-shaft in position comprising a tubular portion through which the crankshaft extends and a handle-frame provided with a pair of handles arranged at right angles to each other, the handle-frame being mounted on the tubular portion between the crank and flexible joint and means for adjustably holding the handle-frame relative to the tubular portion.

3. A bit-brace, comprising a crank-shaft, a chuck, means for holding the chuck at an oblique angle to the crank-shaft, a flexible joint between the crank-shaft and chuck, and a frame for holding the crank-shaft in position comprising a tubular portion through which the crank-shaft extends and a handleframe provided with a pair of handles arranged at right angles to each other, the handle-frame being adjustably secured relative to the tubular portion and provided with an adjustable V-shaped corner-piece arranged between the handles.

4. A bit-brace comprising a crank-shaft, a chuck, a pair of arms for holding the chuck at an oblique angle to the crank-shaft provided with a bearing at one end for the chuck and with a collar at the other end, a flexible joint between the crank-shaft and chuck, and a frame for holding the crank-shaft in position comprising a straight tubular portion secured at one end in the collar, and a handleframe adjustably secured at one end on the collar and having a bearing-piece at its other end extending into the end of the tubular portion.

5. A bit-brace comprising a crank-shaft, a chuck, a pair of arms for holding the chuck at an oblique angle to the crank-shaft, provided with a bearing at one end for the chuck and with a collar at the other end, a flexible joint between the crank-shaft and chuck, and a frame for holding the crank-shaft in position comprising a straight tubular portion secured at one end in the collar, and a handleframe provided with a pair of handles arranged at right angles to each other, the handle-frame being adjustably secured at one end on the collar and having a bearing-piece on its other end, extending into the end of the tubular portion.

In testimony whereof I aflix my signature in presence of two witnesses.

JOSEPH M. RIBERT.

Witnesses:

FRANK G. BRERETON, GRACE P. BRERETON. 

